Recent content by Endorser

At A, the reaction force is Upwards

Basically, the NPN sensor has three wires coming out of it and the gauge had an input of three wires, however, the gauge requires PNP not NPN, so i need to convet the NPN to output PNP

Hello All, I have a sensor which outputs an NPN signal, however, the gauge it connects to only inputs PNP signals, how can i convert the NPN to PNP? I have tried looking for circuit diagrams and simple converters but I have found nothing, all help appreciate. Thanks

As part of an assignment, I have been asked to construct a tower that is completely made of paper and sticky tape. This tower must be built with 4 specifications: 1. Must be built of nothing but paper and tape no cutting devices, glue, ect ect. 2. Must be built within 5 minutes. 3. Must be...

no z direction, nothing, that is what has me confused

I am given a table of values to calculate the volume of water in a lake. X(m) 0 50 100 150 200 250 300 Y(m) 10.2 39.1 56.9 43.2 28.5 17.7 9.8 Where X is intervals across the lake Where Y is depth of the lake in meters The aim is to work out the volume using a range of...

Thanks All, But how to we actually get from A=πy2 δx to ∫πf(x)2dx How does the area become the volume?

As part of an assignment on Approximating Areas and Volume I am asked to derive the equation shown in the image attached. The question reads: "It can be shown that if y = f(x) is revolved around the x-axis to form a solid between x=a and x=b then the volume of the solid is give by the...

Hello All, I have been giving a practical assignment to calculate how terminal velocity changes as the diamter of ball bears increase. I have chosed to use stokes law http://en.wikipedia.org/wiki/Stokes%27_law to assist me with the prac. I required different sized ball bearing but must...

Hello All, I am currently working on DeMOIVRE's Theorem, but when i am converint from polar to complex and vice versa i alwats get my numbers as a decimal that is insanely long and i kno wfor a fact that its just the square root of something. Is there a way to program my calculator (Casio...

Thanks 2 you all, please keep them coming :)

Hello All, As part of my studies I am asked to write a five thousand word report on a topic of interest. I have a passion for engineering and was wondering if PF could help me with my assignment. I have chose to write it on 'Engineering Disasters' (on stuctures such as buildings, bridges...

Is it possible to use a dc powersupply instead? and by safely I was referring to use any AC powerpoints as although i have a safety switch and a self made fuse box to ensure safety for myself and the mains i would prefer using a transformer

Hey PF, My old PSU from my computer blew and being a techy I desolded all the capacitors and micro resisters. I currently have 2 x 200V 470u(micro)f and a 105k 250V capacitors and was wondering how I can charge them to there max capacity. Is there any easy and non dangerous way to do...